With this change, it's possible to override the `erlang` and `elixir`
versions used to compile `elixir-ls`.
For example, to compile v0.24.1 with erlang 27.1.2 and elixir 1.17.3,
run the following:
```bash
./elixir-ls-setup.sh v0.24.1 27.1.2 1.17.3
```